Home / 38,913.68-53,703.50-21,688.73

Finding the Fourth Proportional to 38,913.68, 53,703.50 and 21,688.73

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Solution

The fourth proportional to 38,913.68, 53,703.50 and 21,688.73 is: 29,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,913.68 : 53,703.50 = 21,688.73 : x
  2. Step 2: Convert to fraction form
    38,913.68/53,703.50 = 21,688.73/x
  3. Step 3: Cross multiply
    38,913.68x = 53,703.50 × 21,688.73
  4. Step 4: Simplify right side
    38,913.68x = 1,164,760,535.98
  5. Step 5: Solve for x
    x = 1,164,760,535.98/38,913.68
  6. Step 6: Final answer
    x = 29,931.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.